Airport Express USB power

Discussion in 'Mac Accessories' started by potatis, Nov 9, 2013.

  1. potatis macrumors 6502a

    potatis

    Joined:
    Dec 9, 2006
    #1
    Can the USB port on the Airport Express power a 2.5" hard drive? Was thinking of buying a USB 'only-power' adapter cable since I get funky behavior from the Ethernet attached drive receiving data signals, but maybe there is no point.
     
  2. blueroom macrumors 603

    blueroom

    Joined:
    Feb 15, 2009
    Location:
    Toronto, Canada
    #2
    The Express doesn't support external hard drives, only printers. The Extreme supports hard drives and can power USB powered drives.
     
  3. potatis thread starter macrumors 6502a

    potatis

    Joined:
    Dec 9, 2006
    #3
    I know. I take your answer that the Express doesn't output enough power from the USB port then?
     
  4. g4cube, Nov 9, 2013
    Last edited: Nov 10, 2013

    g4cube macrumors 6502a

    Joined:
    Apr 22, 2003
    #4
  5. potatis thread starter macrumors 6502a

    potatis

    Joined:
    Dec 9, 2006
    #5
  6. RMo macrumors 65816

    RMo

    Joined:
    Aug 7, 2007
    Location:
    Iowa, USA
    #6
    How is the drive powered now? Surely not over Ethernet. If you have an external power adapter and it isn't working, I'm guessing either the adapter has a problem or it wouldn't work via USB power, either. (I don't think there are a lot of 2.5" enclosures with external power supplies, so I'm curious how this is set up now.)
     
  7. Macman45 macrumors demi-god

    Macman45

    Joined:
    Jul 29, 2011
    Location:
    Somewhere Back In The Long Ago
    #7
    An AE will not provide power to anything other than a basic USB stick from which it will read and write to across your network.
     
  8. flynz4 macrumors 68040

    Joined:
    Aug 9, 2009
    Location:
    Portland, OR
    #8
    40ma would not be enough. The original USB spec was 500ma, and at the time, that was marginal to drive a HDD. I think (but have not checked) that newer versions of USB allow higher current.

    /Jim
     
  9. potatis thread starter macrumors 6502a

    potatis

    Joined:
    Dec 9, 2006
    #9
    It's got a built-in battery (http://www.macally.com/EN/?page_id=12507), but when it runs out I have to power it up through USB.
     
  10. blueroom macrumors 603

    blueroom

    Joined:
    Feb 15, 2009
    Location:
    Toronto, Canada
    #10
    Neat device, but 40mA isn't going to power or charge that thing.
     

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